dcp-client/libexec/sandbox/bravojs-env.js

Core libraries for accessing DCP network

/**
 *  This file extends BravoJS, creating a CommonJS Modules/2.0
 *  environment for WebWorkers and similar environments.
 *
 *  Copyright (c) 2018-2022, Distributive, Ltd.  All Rights Reserved.
 *  Wes Garland, wes@kingsds.network
 */

/* global self, bravojs, addEventListener, postMessage */
// @ts-nocheck

self.wrapScriptLoading({ scriptName: 'bravojs-env' }, function bravojsEvn$$fn(protectedStorage, _ring2PostMessage, wrapPostMessage)
{
  const ring2PostMessage = self.postMessage;
  bravojs.ww = {}
  bravojs.ww.allDeps = []
  bravojs.ww.provideCallbacks = {}

  //Listens for postMessage from the sandbox
  addEventListener('message', async function bravojsEnv$$sandboxPostMessageHandler(event) {
    let message = event
    let indirectEval = eval // eslint-disable-line
    switch (message.request)
    {
      case 'moduleGroup': /* Outside environment is sending us a module group */
        module.declare = bravojs.ww.groupedModuleDeclare
        let packages = Object.keys(message.data)

        for (let i = 0; i < packages.length; i++)
        {
          let fileNames = Object.keys(message.data[packages[i]])
          for (let j = 0; j < fileNames.length; j++)
          {
            bravojs.ww.moduleId = packages[i] + '/' + fileNames[j]
            indirectEval(message.data[packages[i]][fileNames[j]], fileNames[j])
          }
        }

        delete module.declare

        if (bravojs.ww.provideCallbacks.hasOwnProperty(message.id))
        {
          bravojs.ww.provideCallbacks[message.id].callback()
          delete bravojs.ww.provideCallbacks[message.id]
        }
        break
      case 'moduleGroupError': /* Outside environment is sending us a module group error report */
        if (bravojs.ww.provideCallbacks.hasOwnProperty(message.id) && bravojs.ww.provideCallbacks[message.id].onerror)
          bravojs.ww.provideCallbacks[message.id].onerror();
        else
          console.error('moduleGroupError ', message.stack);
        break;
      default:
        break;
    }
  })

  /** A module.declare suitable for running when processing modules arriving as part
  * of a  module group or other in-memory cache.
  */
  bravojs.ww.groupedModuleDeclare = function bravojsEnv$$ww$groupedModuleDeclare(dependencies, moduleFactory) {
    var i
    var moduleBase = ''

    if (bravojs.debug && bravojs.debug.match(/\bmoduleCache\b/)) { console.log('Loaded ' + dependencies + ' from group') }

    if (typeof moduleFactory === 'undefined')
    {
      moduleFactory = dependencies
      dependencies = []
    }

    bravojs.pendingModuleDeclarations[bravojs.ww.moduleId] = {
      moduleFactory: moduleFactory,
      dependencies: dependencies
    }

    for (i = 0; i < dependencies.length; i++)
      bravojs.ww.allDeps.push(bravojs.makeModuleId(moduleBase, dependencies[i]))
  }

  /** A module.provide suitable for a web worker, which requests modules via message passing.
   *
   *  @param  dependencies      A dependency array
   *  @param  callback          The callback to invoke once all dependencies have been
   *                            provided to the environment. Optional.
   *  @param  onerror           The callback to invoke in the case there was an error providing
   *                            the module (e.g. 404). May be called more than once.
   */
  bravojs.Module.prototype.provide = function bravojsEnv$$Module$provide(dependencies, callback, onerror) {
    var id = Date.now() + Math.random()

    dependencies = bravojs.normalizeDependencyArray(dependencies)

    bravojs.ww.provideCallbacks[id] = {
      callback: callback,
      onerror: onerror
    }

    ring2PostMessage({
      request: 'dependency',
      data: dependencies,
      id,
    });
  };
}); /* end of fn */